Part No: AN863Issued year: 2016File size: 1.62mbFile type: pdf
This application note describes the use of ISOLUTE® ENV+ on-line cartridges in a fully automated on-line SPE-LC-MS/MS method for extraction and quantification of 16 acid herbicides in drinking and surface water.
Part No: SSI-LCMS-096Issued year: 2018File size: 0.87mbFile type: pdf
Analysis of the perfluorinated alkyl acids listed in EPA Method 537 along with fluorotelomeric alcohols and perfluorinated sulfonates were extracted using SPE (using ISOLUTE 101 500 mg/ 6 mL SDVB SPE columns) and analyzed on the LCMS 8045. Minimum Detection Limits(MDL) ranged from 0.69 to 3.25 ppt. Extraction recoveries were greater than 80% for all compounds, with surrogate recoveries within 10% of the true value.
Part No: AN009-HORIssued year: 2015File size: 0.78mbFile type: pdf
Method 525.2 describes the procedure to determine a full suite of low concentration semi-volatile organic compounds in drinking water using solid phase extraction (SPE) or liquid–solid extraction (LSE) techniques. The City of Fort Worth, Water Department implemented an automated SPE process for the analysis of semi-volatiles by EPA Method 525.2 using the Atlantic® C18 solid phase extraction disk. Ethyl acetate, methanol and water were used to condition the Atlantic C18 disk prior to the extraction step. The extraction solvents used were a 1:1 mixture of methylene chloride and ethyl acetate. Extracts were then analyzed by GC/MS using a splitless injection technique.
Part No: AN011-HORIssued year: 2010File size: 0.29mbFile type: pdf
The second unregulated contaminant monitoring regulation (UCMR2) program was developed to monitor US drinking water sources for currently unregulated compounds. EPA Method 527 is categorized under List 1; Assessment Monitoring in the UCMR2 program. It focuses on a wide range of semi volatile organic contaminants including pesticides that were deferred during the first UCMR, flame retardants, and pyrethroid pesticides. This application for EPA Method 527 employs SPE with analysis by gas chromatography / mass spectrometry (GC/MS).
Part No: AN010-HORIssued year: 2009File size: 0.2mbFile type: pdf
Method 526 is a gas chromatography / mass spectrometry(GC/MS) method for the determination of selected semivolatile compounds in raw and finished drinking waters.This method efficiently extracts analytes using the SPEDEX® 4790 with an Atlantic® 47 mm polystyrene divinylbenzene (DVB) disk. The disk is extracted with using Ethyl Acetate (EtAc) and Methylene Chloride (DCM). The extract is then dried and concentrated using the DryVap® concentrator system coupled with DryDisk® technology to a final volume of 1.0 mL. Final analysis is done by GC/MS.